JPH10148280A - Hose with leak alarm device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure wherein in a hose with leak alarm device, necessity for a built-in battery is eliminated, under a condition without apprehension releasing a leak fluid to the outside by destruction of the alarm device, leaking of a transport fluid can be easily visually recognized. SOLUTION: This hose 1 with leak alarm device is provided with a base hose main unit 5 and a mounting metal fixture 8, at least one through hole 30 extended along the axial direction in a connection part 17, closing member 33 in an opening part of the through hole 30, rod member 36 and a gas cylinder 40 in the through hole 30, protruded part opposed to a sealed opening part of the gas cylinder 40 in any one of the closing member 33 and the rod member 36, and the alarm device 31 in an upper side opening part. Here, according to advance moving of the rod member 36, in the opening part of the gas cylinder 40, the protruded part is operated, a gas jet is formed, by jet pressure of gas generated from the gas jet formed in the gas cylinder 40, the alarm device 31 is operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose with a leak alarm device that can easily visually recognize the leakage of a transport fluid flowing in a hose, has a long service life, and is excellent in safety.

[0002]

2. Description of the Related Art As a means for indicating a leak in a conventional hose of this type, for example, the applicant has previously disclosed Japanese Patent Laid-Open No. 5-9978.
As disclosed in Japanese Unexamined Patent Publication No. 2, the rod member provided in the through-hole provided in the annular projection of the mounting bracket is used only when the fluid leaks, by utilizing the pressure due to the fluid leak. To notify the leakage of the transport fluid by projecting it from the outside, or, as disclosed in U.S. Pat.No. 4,465,105, activate the switch using the hydraulic pressure generated by the leakage and install it at the end of the hose. There is generally known a method of notifying a leak by turning on an alarm lamp.

However, in the former method, it is sometimes difficult to visually recognize the rod member, which protrudes to the outside from the inside of the through-hole, so that it is difficult to visually recognize the rod member. Since the built-in battery used as the operating power source wears out with a relatively short life (about 3 to 5 years), even if the leak occurs after using this hose for a certain period of time, the alarm device will be activated due to the consumption of the built-in battery. In some cases, there was an inconvenience of not doing so.

[0004] Therefore, it is necessary to develop a means for easily visually recognizing the leakage of the transport fluid under a configuration that does not require a built-in battery. An example of the development of such means is a reinforced rubber hose disclosed by the applicant in Japanese Patent Publication No. 57-25756.

In such a hose, a flexible bag is attached to the end of the hose, and a passage for a leaked fluid is provided in the hose body. When a leak of the transport fluid occurs, the passage is opened. The leakage fluid is guided into the inside of the flexible bag through the bag, and the bag is directly inflated with the leakage fluid, so that the leakage of the transport fluid can be recognized from the outside of the hose.

[0006]

However, in the reinforced rubber hose described in the above-mentioned publication, when a leakage of the transport fluid occurs, the transport fluid such as oil leaked from the hose is supplied to the inside of the bag body. Since the structure is such that the bag is directly inflated by increasing the supply pressure of the transport fluid, for example, when the leakage of the transport fluid is relatively small, it takes a considerable time to completely inflate the bag. In other words, in such a case, there is a risk that the monitoring personnel may not be able to quickly recognize the leakage of the transport fluid, and if the leakage of the transport fluid is extremely large, the leak has occurred within the bag in a short time. It is preferable in that the transport fluid is supplied and the bag is completely inflated in a short time, but on the other hand, the pressure inside the bag rapidly increases, and there is a risk that the bag may burst, The rupture of the bag is For example, when transporting crude oil and the like from a tanker to an onshore oil storage facility, when used floating on the water surface, the crude oil will be released to the sea, which will cause marine pollution and other disasters. Was.

Accordingly, an object of the present invention is to employ a hose end structure for operating a warning device by indirectly utilizing the pressure of a leaked transport fluid without using a built-in battery, thereby enabling the transport fluid to be transported. It is an object of the present invention to provide a hose with a leak alarm device that can quickly and easily visually recognize a leak, has a long service life, and is excellent in safety.

[0008]

A hose with a leak alarm device according to the present invention includes a base hose body having an inner rubber layer, an outer rubber layer, and a first reinforcing layer having at least one ply interposed therebetween. A mounting bracket having an outer surface portion fixedly connected to an inner surface of an end of the base hose body, and a connecting flange provided at an end of the mounting bracket located on a side remote from the outer surface portion; An annular member having a connecting portion fixed to the outer surface of the mounting bracket and a rib portion extending radially outward from the outer portion is provided between the outer surface portion and the outer peripheral portion of the base hose body via an elastic body. A second reinforcement layer comprising at least one ply is arranged,
In a hose in which an end of the second reinforcing layer is fixed by engagement with the annular member, at least one through-hole extending along an axial direction of a mounting bracket is provided at a connecting portion of the annular member, A closing member is provided at an opening located on the connecting flange side of the through hole, a rod member that can move toward the closing member in the through hole, and a gas cylinder is provided between the rod member and the closing member. One of the member and the rod member is provided with a protruding portion facing the closed opening of the gas cylinder, and an alarm device is provided in an upper opening communicating with a through hole provided on the upper surface of the connecting portion, and the alarm device is provided. With the advance movement, the projecting portion acts on the opening of the gas cylinder to form a gas ejection port, and the alarm device is activated by the ejection pressure of gas generated from the gas ejection port formed in the gas cylinder. Having.

More preferably, a projection is provided on the closing member, a coil spring is provided between the closing member and the gas cylinder, and when the transport fluid flowing in the hose leaks, the leaked transport is provided. When the rod member is pressed by the pressure of the fluid, the gas cylinder is advanced to the position where the gas ejection port is formed against the spring force of the coil spring, and when there is no leakage of the transport fluid, the spring of the coil spring is moved. By force, the rod member is spring-fixed at the closed position of the rib side opening of the through hole, or a protrusion is provided on the rod member, the gas cylinder is fixedly arranged on the closing member, and between the gas cylinder and the rod member. A coil spring is provided, and when the transport fluid flowing through the hose leaks, the pressure of the leaked transport fluid causes the rod member to advance to the gas outlet forming position of the gas cylinder against the spring force of the coil spring. The moved, wherein, when there is no leakage of transportation fluid, by the spring force of the coil spring and spring fixing rod member in the closed position of the rib portion side opening of the through hole.

[0010] Further, the alarm device is a flexible bag which is inflated by the jet pressure of gas generated from the gas cylinder, the gas cylinder is a gas cylinder storing liquefied gas, and / or It is more preferable that a protective portion surrounding the side peripheral surface of the alarm device is formed on the upper surface portion including the position of the upper opening portion, a concave portion is provided in the protective portion, and the alarm device is stored in the concave portion.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hose with a leak alarm device according to the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a main part of a typical hose with a leak alarm device according to the present invention, mainly showing an end of the hose, wherein 1 is a hose with a leak alarm device, 2 is an inner rubber layer, and 3 is an outer rubber layer. Layer, 4 is the first reinforcing layer, 5 is the base hose body,
8 is a mounting bracket.

A hose 1 having a main section shown in FIG. 1 has a base hose body 5 having an inner rubber layer 2, an outer rubber layer 3, and a first reinforcing layer 4 comprising at least one ply interposed therebetween. And the inner surface of the end of the base hose body 5
6a (specifically, the inner surface of the end portion of the inner rubber layer 2) and a mounting bracket 8 having an outer surface portion 7a fixedly connected thereto.

In FIG. 1, the first reinforcing layer 4 is composed of three pressure-resistant reinforcing layers 4a4b and 4c obtained by rubberizing organic fibers. However, the present invention is not limited to these structures. For example, a pressure-resistant reinforcing layer obtained by rubberizing a steel cord or the like can be applied, and the number of plies can be appropriately changed according to the application. Also, a pressure-resistant reinforcing layer
Preferably, a layer 56 in which steel wires are embedded is provided between 4b and 4c as shown in FIG.

The base hose body 5 has its inner end surface 6a vulcanized and bonded to the outer surface portion 7a of the mounting bracket 8, and each end portion of the inner and outer pressure-resistant reinforcing layers 4a and 4b is attached to the mounting bracket 8. The bead wires 11, 10 are located at positions beyond the serrated ribs 9, 10 provided at predetermined intervals in the axial direction 15.
Engage 12 and turn it back.
And is firmly connected to the mounting bracket 8.

A connecting flange 16 for connecting to another hose is provided at an end of the mounting member 8 at a side remote from the outer surface portion 7a, and the connecting flange 16 and the outer surface portion are provided.
7a, a connecting portion 17 fixed to the outer surface 7 of the mounting bracket 8.
And an annular member 19 having a rib portion 18 extending radially outward from the annular member 19. The annular member 19 is provided on the outer surface 3 a of the base hose main body 5 (specifically, the outer surface of the outer rubber layer 3) via the elastic body 20. A second reinforcing layer 21 made of one ply is arranged, and an end portion of the second reinforcing layer 21 is fixed by engagement with the annular member 19.

The annular member 19 at the end of the second reinforcing layer 21
Specifically, the end portion of the second reinforcing layer 21 is fixed to the rib portion of the annular member 19 made of a rigid member such as carbon steel.
At a position beyond 18, the bead wire 26 is wound and folded, and the outer periphery of the folded end portion is tightened with a tightening cord 27.
The second reinforcing layer 21 is thereby tightened.
It is preferable that the connecting member 8 be firmly fixedly connected to the annular member 19 and thus to the mounting bracket 8.

The elastic body 20 disposed on the outer surface of the base hose main body 5 is preferably made of, for example, a foamed elastic body in order to absorb the shock of the leaked fluid. One or more leakage fluid outlet passages 22 are formed between adjacent side walls of the elastic body 20 by winding the elastic body 20 and the elastic body 20 and the leakage fluid outlet passage.
Although the configuration is such that the lining rubber layer 23 and the second reinforcing layer 21 cover the layer 22, the configuration such as the number of plies forming the second reinforcing layer 21 and the presence / absence of the arrangement of the leakage fluid outlet passage 22 is not particularly limited. Instead, they can be changed as needed.

The elastic body 20 includes nitrile butadiene rubber,
It is preferable to use a foam such as styrene-butadiene rubber, polyethylene, or vinyl chloride resin, and it is preferable that the lining rubber layer 23 also use nitrile-butadiene rubber, styrene-butadiene rubber, or the like.

As the cord embedded in the second reinforcing layer 21, it is preferable to use the same kind of cord as the cord embedded in each of the reinforcing layers 4a, 4b, 4c of the base hose body 5, for example, a polyester cord. The intersection angle of the cord is
In order to prevent deformation of the leakage fluid outlet passage 22, the static angle (54.44
°).

In FIG. 1, in order to increase the buoyancy of the hose itself, a buoyancy material 24 made of, for example, a foam material is disposed on the outer peripheral side of the second reinforcing layer 21 and furthermore, the buoyancy material is further increased.
An outer skin rubber layer 25 is provided on the outer peripheral surface of 24.
A breaker may be provided between the outer layer 24 and the outer rubber layer 25, and these may be provided as necessary.

Then, the present invention, as shown in FIG.
The connecting portion 17 of the annular member 19 is attached to the mounting member 8 in the axial direction 15.
At least one through hole 30 extending along the opening is provided, and a closing member 33 is provided in the opening 28 located on the connecting flange side of the through hole 30, and moves toward the closing member 33 in the through hole 30. A gas cylinder 40 is provided between the possible rod member 36 and the closing member 33, and a protrusion 29 is provided on one of the closing member 33 and the rod member 36 so as to face the closed opening of the gas cylinder 40. , Through-holes provided in the connection part upper surface 17a
The alarm device 31 is provided in the upper opening 43 communicating with the device 30, and FIG.
As shown in the figure, with the advance movement of the rod member 36,
The projecting portion 29 acts on the opening of the gas cylinder 40 to form a gas ejection port 34, and the alarm device 31 is activated by the ejection pressure of gas generated from the gas ejection port 34 formed in the gas cylinder 40.
Is the main structural feature.

The closing member 33 is made of a rigid material such as stainless steel or carbon steel, and is fixed at the position of the opening 28 of the through hole 30 by screw connection to the inner surface of the through hole 30 via a seal ring 48. In addition, it is preferable that the gas generated from the gas cylinder 40 does not leak to the outside through the opening 28 of the through hole 30 (FIG. 3).

The projecting portion 29 may be disposed so as to face the closed opening of the gas cylinder 40, and may be configured so as to act so that the gas outlet 34 can be formed in the gas cylinder 40 when the transport fluid leaks. Specifically, it is provided on one of the closing member 33 and the rod member 36.

For example, as shown in FIG. 3, when the projection 29 is provided on the closing member 33, the closing member 33 and the gas cylinder 40 are provided.
It is preferable to dispose the coil spring 41 between the gas cylinder 40 and the gas cylinder 40 in order to surely move the gas cylinder 40 without malfunction.With this configuration, when the transport fluid flowing through the hose leaks, the pressure of the leaked transport fluid is increased. When the rod member 36 is pressed, the gas cylinder 40 is advanced to the position where the gas ejection port 34 is formed against the spring force of the coil spring 41, and when there is no leakage of the transport fluid, the spring force of the coil spring 41 Accordingly, it is preferable that the rod member 36 be spring-fixed to the closed position of the rib-side opening 44 of the through hole 30,
When the projection 29 is provided on the rod member 36, the gas cylinder 40 is fixedly disposed on the closing member 33, and a coil spring is disposed between the gas cylinder and the rod member for the same reason as the former, and the inside of the hose is provided. When the transport fluid flowing through the gas leaks, the rod member is advanced by the pressure of the leaked transport fluid to the gas outlet forming position of the gas cylinder against the spring force of the coil spring, and when there is no leak of the transport fluid. It is preferable that the rod member is spring-fixed to the closed position of the opening on the rib side of the through hole by the spring force of the coil spring.

The projection 29 is, for example, as shown in FIG.
It is preferable that the tip is pointed and a gas ejection groove 55 extending along the axial direction 15 is provided at an upper portion of the side peripheral surface. FIGS. 7 (a) and 7 (b) are enlarged views of an example of the shape of the side surface and the cross section of the protrusion 29 when the protrusion 29 is formed of a needle.

The process of forming the gas jet port 34 in the gas cylinder 40 by the action of the projecting portion 29 will be briefly described. The gas cylinder 40 is made of mild steel which is gas-impermeable and easy to make holes. Sealing member made of material such as
The gas cylinder 40 is closed at 39 so as to confine the fluid serving as a gas generation source stored in the cylinder. When the gas cylinder 40 advances and moves, the projecting portion 29 is attached to the sealing member 39 of the gas cylinder 40.
Is pierced, and the projecting portion 29 penetrates the sealing member 39 to release the sealing by the sealing member 39, whereby the gas outlet 34 can be formed in the gas cylinder 40.

The gas cylinder 40 only needs to have a structure that generates sufficient gas to inflate the flexible bag when the transport fluid leaks, and in particular, makes the hose end compact. If necessary, it is more preferable to use a small cylinder storing liquefied gas. In addition, gas cylinder 40
The gas to be generated from the possibility that the flexible bag ruptures be assumed, CO ₂ gas Ya no harm being discharged to the external environment
It is preferable to use N ₂ gas or the like.

As shown in FIG. 3, the alarm device 31 is mainly used for fixing and connecting the alarm portion 32, the chamber 50 storing the alarm portion 32, and the chamber 50 to the upper opening 43 through the seal ring 46. And the connection joint 51 of FIG.

The alarm unit 32 is stored in a folded state in the chamber 50 as shown in FIG. 3 when there is no leakage of the transport fluid from the hose, and only when the leak of the transport fluid occurs in the hose, As shown in FIG. 4, it is preferable that the flexible bag body be inflated upward from the chamber 50 by the pressure of the gas ejected from the gas cylinder 40. Leakage of the transport fluid can be easily recognized visually.

The flexible bag is preferably formed of a rubber-like elastic material. Particularly, when the internal pressure is likely to be relatively high, a rubber reinforced with an organic fiber cord or a steel cord may be used. It is preferable to form the elastic member.

The chamber 50 is preferably made of a rigid material such as carbon steel or stainless steel.

In FIG. 1, for the purpose of protecting the alarm unit 32 housed in the chamber 50,
The case where a protective cap 35 made of carbon steel or stainless steel that can be separated when the alarm unit 32 is activated is shown,
The protective cap 35 can be appropriately provided as needed.

For example, when this hose is used underwater or on the water surface such as the sea or a river, the protective cap 35 can be provided for the purpose of waterproofing. It can be provided for the purpose of making it possible to visually recognize the leakage of the transport fluid more easily by setting it so as to greatly jump upward from the chamber 50.

FIG. 3 shows a case where a stopper 49 is provided on the inner surface of the through hole in order to reliably stop the advance movement of the gas cylinder 40 at the optimum position. As a specific example in this case, the rod member 36 is configured such that the opening 44 side is a large-diameter head 37 and the side that presses the gas cylinder 40 is a small-diameter shaft 38, and the inner diameter of the through hole 30 is The head 37 is formed so as to be slidable through a seal ring 42, and a stopper 49 provided at an appropriate position on the inner surface of the through hole is provided with a large-diameter head 37.
By abutting the step 54 between the gas cylinder 40 and the small-diameter shaft 38, the gas cylinder 40 that moves forward can be reliably stopped at the gas ejection position. In addition, various forms can be adopted as this stopping means.

It is preferable that the annular member 19, the rod member 36 and other members are made of a rigid material such as a plastic material or a metal material from the viewpoint of enhancing the trauma resistance and sufficiently securing the operation reliability. .

When the leakage of the transport fluid in the hose occurs along the outer surface 7 of the fitting 8 as shown by the broken line in FIG.
, And the pressure of itself pushes the gas cylinder 40 via the rod member 36 against the projection 39 of the closing member 33 against the force of the coil spring 41.

As a result, the projection 29 pierces the sealing member 39 of the gas cylinder 40, and the projection 29
By releasing the sealing by the sealing member 39 through 39, a gas outlet 34 is formed at the opening of the gas cylinder 40, and gas is ejected from the gas cylinder 40 and supplied into the flexible bag 32, The flexible bag 32 is inflated, so that an observer or another worker can visually recognize it or the like, and can easily find the occurrence of leakage of the transport fluid.

When the leakage of the transport fluid from the hose reaches the leakage fluid outlet passage 22 after passing through the base hose body 5 in the radial direction, the leak fluid is subjected to the action of the outlet passage 22 under the action of the outlet passage 22. The rod member 36 is guided to the position of the through hole 30 and presses the rod member 36 in the same manner as described above, and in this case also, the occurrence of leakage can be easily and quickly found.

In any of these cases, leakage of the leaked fluid that has reached the through hole 30 to the outside of the hose is reliably prevented by the seal ring 42 disposed on the large diameter head 37 of the rod member 36. Will be.

Further, as shown in FIG. 1, the structure is such that the leakage fluid outlet passage 22 is omitted from the elastic body 20 around the base hose body 5, and the leakage fluid causes the base hose body 5 to When passing radially, further leakage of the leaked fluid to the outside in the radial direction is prevented by the second reinforcing layer 21, and
The reinforcing layer 21 guides the flow of the leaked fluid to the hose side, and eventually forces the leaked fluid to flow into the through-hole 30. The gas cylinder 40 is advanced and moved via 36, a gas ejection port is formed by the action of the above-described projection, and gas generated from the gas cylinder 40 is supplied into the flexible bag 32, and the flexible bag 32 is It will expand and the effect mentioned above will arise.

Therefore, according to the present invention, even if the leakage fluid outlet passage 22 is omitted, the leakage of the leakage fluid to the outside of the hose is sufficiently prevented under the action of the second reinforcing layer 21, and the leakage detection is performed. The means can function as expected.

When it is necessary to prevent the alarm device 31 from being damaged by contact between hoses or collision with a work boat or a drifting object, as shown in FIG. 5 and FIG. 17a, a protective portion 45 surrounding the side peripheral surface of the alarm device 31 is formed on an upper surface portion including the upper opening position 43, a concave portion 47 is provided in the protective portion 45, and the alarm device 31 is provided in the concave portion 47.
Is more preferably stored. In this case, the protection unit 45
Needs to be thicker than the alarm device 31.

The protection section 45 may be disposed only at a portion surrounding the alarm device 31 or may be disposed all around. The protection portion 45 is preferably made of the same material as the outer rubber layer 3 of the hose, and if necessary, can be made of a rubber-like elastic material reinforced with an organic fiber cord such as steel wire or nylon.

The above is only an example of the embodiment of the present invention, and various changes can be made within the scope of the claims. For example, in FIGS. 1 and 5, the alarm unit 32 of the alarm device 31 is disposed above the hose so as to be seen from above the water surface, assuming that the hose is installed on the water surface or in the water. May be arranged at a position where the observer or the like can easily see, and the alarm device 31
A plurality of through holes 30 may be provided together with the through holes 30, and various modes may be adopted.

[0045]

As described above, according to the present invention, it is possible to provide a hose with a leak alarm device which can quickly and easily recognize the leakage of a transport fluid, has a long service life, and is highly safe. Was.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a typical hose with a leak alarm device according to the present invention.

FIG. 2 is a plan view of the end of the hose shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of the hose shown in FIG. 1 including an alarm device 31 and a through hole 30 provided in a connecting portion 17, and shows a gas cylinder 40 in a case where no leakage of transport fluid occurs. FIG.

FIG. 4 is an enlarged view showing a portion of the hose shown in FIG. 1 including the alarm device 31 and the through hole 30 provided in the connecting portion 17, and shows a gas cylinder 40 in a case where a transport fluid leaks.
Is a diagram showing a state in which the alarm device 31 is operated at the maximum advance movement position.

FIG. 5 is a sectional view of a main part showing another embodiment of the hose end.

FIG. 6 is a plan view of the end of the hose shown in FIG. 5;

7A and 7B are enlarged views of the protruding portion 29 of the closing member 33. FIG. 7A is a side view, and FIG. 7B is a cross-sectional view taken along line AA of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hose with leak alarm device 2 inner rubber layer 3 outer rubber layer 4 first reinforcing layer 5 base hose body 6 inner surface of base hose body 5 7 outer surface of mounting bracket 8 mounting bracket 9,10 serrated rib 11,12 bead wire 13, 14 Tightening cord 15 Axial direction of the mounting bracket 8 16 Connecting flange 17 Connecting part of the annular member 18 Rib part of the annular member 19 Annular member 20 Elastic body 21 Second reinforcement layer 22 Leakage fluid outlet passage 23 Lining rubber layer 24 Buoyancy material 25 Outer rubber layer 26 Bead wire 27 Tightening cord 28 Opening located on connecting flange side of through hole 30 Projection 30 Through hole 31 Alarm device 32 Alarm unit (or flexible bag) 33 Closing member 34 Gas outlet 35 Protective cap 36 Rod member 37 Large-diameter head of rod member 36 Small-diameter shaft part of rod member 36 Gas cylinder sealing member 40 Gas cylinder 41 Coil spring 42,46,48 Seal ring 43 Upper opening 44 Through hole 30 Opening located on the rib 18 side 45 Protective part 47 Depressed part provided in the protective part 45 49 Stopper 50 Chamber 51 Connection joint 52 Protrusion provided on the outer surface of the chamber 50 53 Depressed part provided on the inner surface of the protective cap 35 54 Step Part 55 Gas injection groove 56 Layer embedded steel wire

Claims (6)

[Claims] 1. A base hose body having an inner rubber layer, an outer rubber layer, and a first reinforcing layer comprising at least one ply interposed therebetween, and is fixedly connected to an inner surface of an end of the base hose body. A mounting flange having an outer surface portion, a connecting flange provided at an end of the mounting metal member located on a side remote from the outer surface portion, and being fixed to an outer surface of the mounting bracket between the connecting flange and the outer surface portion. An annular member having a connecting portion to be provided and a rib portion extending radially outward from the connecting portion is provided, and a second reinforcing layer composed of at least one ply is disposed on the outer periphery of the base hose body via an elastic body. In a hose in which an end of a second reinforcing layer is fixed by engagement with the annular member, at least one through-hole extending along an axial direction of a mounting bracket is provided at a connecting portion of the annular member. A closing member is provided at an opening portion of the hole, which is located on the connecting flange side, and a rod member movable toward the closing member in the through hole; and a gas cylinder provided between the rod member and the closing member. And a protruding portion is provided on one of the rod members in opposition to the closed opening of the gas cylinder, an alarm device is provided on an upper opening communicating with the through hole provided on the upper surface of the connecting portion, and the rod member is advanced. With the movement, the projecting portion acts on the opening of the gas cylinder to form a gas ejection port,
A hose with a leak alarm device, wherein an alarm device is activated by an ejection pressure of gas generated from a gas outlet formed in a gas cylinder. 2. A projecting portion is provided on a closing member, a coil spring is disposed between the closing member and a gas cylinder, and when a transport fluid flowing in a hose leaks, a rod is formed by the pressure of the leaked transport fluid. When the member is pressed, the gas cylinder is advanced to the position where the gas ejection port is formed against the spring force of the coil spring, and when there is no leakage of the transport fluid, the rod member is moved by the spring force of the coil spring. The hose with a leak alarm device according to claim 1, wherein the hose is fixed to a closed position of the opening of the through hole on the side of the rib. 3. A projection is provided on a rod member, a gas cylinder is fixedly disposed on a closing member, a coil spring is disposed between the gas cylinder and the rod member, and when a transport fluid flowing in the hose leaks, The rod member is advanced to the gas outlet forming position of the gas cylinder against the spring force of the coil spring by the pressure of the leaked transport fluid, and when there is no leak of the transport fluid, the rod member is moved by the spring force of the coil spring. 2. The hose with a leak alarm device according to claim 1, wherein the rod member is spring-fixed to a closed position of the opening on the rib side of the through hole. 4. The hose with a leak alarm device according to claim 1, wherein the alarm device is a flexible bag that is inflated by the pressure of the gas generated from the gas cylinder. 5. The hose with a leak alarm device according to claim 1, wherein the gas cylinder is a gas cylinder storing a liquefied gas. 6. A protection portion surrounding the side peripheral surface of the alarm device is formed on an upper surface portion of the upper surface of the connecting portion including the position of the upper opening, a recess is provided in the protection portion, and the alarm device is stored in the recess. The hose with a leak alarm device according to any one of claims 1 to 5, wherein the hose has a leak alarm device.